Mechanism for calculating and like machines



W. S. GUBELMANN. KEY INTERLOCKING MECHANISM FOR CALCULATING AND LIKE MACHINES.

APPLICATION FILED AUG-I4. I918.

PatentedlIIar. 23, 1920.

I SHEETS-SHEET I.

I w. s. GUBELMANN. KEY INTERLOCKING MECHANISM FOR CALCULATING AND LIKE MACHINES. APPLICATION FILED AUG-I4, I9I8.

1,334,533,- I Patented Mar. 23, 1920.

I SHEETS-SHEET 2.

\ v I g INVENTOR,

w. s. GUB ELMANN. KEY INTERLOCKPNG MECHANISM FOR CALCULATING AND LIKE MACHINES.

' APPLICATION FILED AUG-14. 1918. I

1,334,533. Patented Mar. 23, 1920.

7 SHEETS-SHEET 3.

INVENTOR.

W. S. GUBELMANN.

KEY INTERLOCKING MECHANISM FOR CALCULATING AND LIKE MACHINES. APPLICATION FILED Aue.14, 191s. L s 9 1,334,533, Patented Mdl. 2.5, 19A).

7 SHEETS-SHEET'4.

Iuvwron.

W.. S. GUBELMANN.

KEY INTERLOCKI NG MECHANISM FOR CALCULATING AND LIKE MACHINES.

APPLICATION FILED AUG. I4, 1918-.

' z SHEETS-SHEET 5.

ENTOR.

w.. s.. GUBELMANN. KEY INTERLOCKI NG MECHANISM FOR CALCULATING AND LIKE MACHINES.

APPLICATION FILED AUG-H, IQIB.

Patented Mar. 23, 1920.

7 SHEETS-SHEET 6.

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W. 8.. GUBELMANN. KEY INTERLOCKING MECHANISM FOR CALCULATING AND LIKE MACHINES.

APPLICATION FILED AUG-1 4, 19I8.

Patented Mar. 23, 1920.

7 SHEETS-SHEET 7- o Sui mvm 3n nnn GYM men

awn

F i rm i F- i INVENTOR.

WILLIAMS. GUBELMWN, or BUFFALO, 'I IEW Yolk.

xny-mrnanooxme MECHANISM-FOR CALCULATING Ann 1.1km MACHINES. l I i Original-application filed January 10, 1900, Serial No.

' Specification of Letters Patent. Patented Mar. 23, 1920.

1,004. Divided and this application filed August 14,

1918. I Serial ms. 249,905.

To all whom it may concern Be it known that I, WILLLAM S. GUBEL- MANN, a citizen of the United States, resid- "ing in Buffalo, in thecounty of Erie and State of New York, have invented certain new and useful Improvements in Key lnterlocking Mechanisms for Calculating and like Machines, of which the following is a specifi cation. a

This invention relates to improvements in key-interlocking mechanism for calculating and like machines,'and is a divisionof my pending application Serial N0.;1,004, filed January 10, 1900.

Only such of the mechanism herein described as refersto key interlocking mechanism is claimed herein. i

One of the objects'of the invention is to provide improved mechanism whereby only one key of a row may, be in operative position at a time.

Another object is to provide improved mechanism whereby only a predetermined plurality of keys of a row may be in operafive position at a time.

- Another object is to provide key-interlocking mechanism which will permit corrections 1 to be made in the setting of the keys.

- Other objects will be pointed out in the 1 following description and claims and fully the same, taken substantiallyin line- 22, Fig. 1. v Fig. 3 is a perspective view of-one of the registering keys. Fig. 4 is a cross section in line 4-4, Fig. 8..

Fig. 5 is a cross section in'line 5 Fig. 9. Fig. 6 is a fragmentary perspective view of the gear rack'and controlling arm of the main adding mechanism. Fig. 7 'is a fragmentary longitudinalsec tional elevation taken substantia-Hy in line 77, Fig. 1, and showing the auxiliary add-g ing and printing mechanisms, v

ig. 8 is a fragmentary udinal' sectional elevation taken in line 8'8, Fig. 16,. and showing the mechanism whereby only one key of a row can be in depressed posl- 'tion at a time.

- Fig. 9 is a fragmentary longitudinal illustrated in the accompanying drawings 'Fig. 2 is'a vertical longitudinal section of tional elevation, taken in line 99, Fig. 16,

PATENT curl-on.

Fig. 11 is a longitudinal sectional eleva-y tion, taken substantially in line 1111, Fig.

1, and showing particularly the paper carriage and the mechanism whereby different parts of the machine may be thrown into and out of gear.

' Fig. 12 is a vertical section, taken substan-- tially in line 12 12 Fig. 2. -F1g. 13 is a vertical transverse section taken 1n 1ine.1313, Fig. 2.

' Fig. 14 is a fragmentary transverse sec- I tional'elevation' taken in line 1414, Fig. 2, and showing the mechanism for holding thekeys in their depressed position and for re" leasing the same.

Fig. 15 is a fragmentary perspective View of the key holding and releasing'mechanism. Fig. 16 is a fragmentary transversesec 'tional elevation, taken in line 16-16, Fig. 2

, Like letters of reference refer to like parts in the several figures. General oonstrfwot ion.

1, represents the main frame of the machine, which may be of any suitable construction so as to support the working parts of the machine.

2, represents a numberof main dials which register the total of the numbers which are added together. These dials consist preferably of cup shaped wheels which are numbored on their periphery and are mounted in their proper order on a transverse dial shaft '3, which is journaled in bearings on the main frame, the dials being so arranged that the [dial I representing the lowest number is arrangedon the right-hand end of the series iand't he dials representing the successively higher numbers'being arranged successively 1ntheir order toward the left from the dial representing the lowestnumber. The lowest or right-hand'dial is preferably divided on its periphery into eighths so as to indicate fractions of a centin eighths, and the remaining dials are graduated on their pe- Iiphery according to thedecimal system intotenths. As shown in the drawings ten total dials are shown and extend from fractions more than tens of millions.

25 rock-shaft 9.

rearwardly. 50 rock-arm. 13, the rock-arms 8 are swung-forof a cent to tens of millions, but if desired, additional dials may be added to the right and to the left of the series, if it is deslred to register smaller divisions of a cent, or Each of the main total dials 2, is provided'on its lefthand side with a gear pinion 4, which is rigidly connected therewith, as shown in Figs; 2 and 7."

The pinion of the fraction wheel has elght teeth, while the pinions of the remaining dials are each provided with ten teeth. 5, represents the main registering gear segments, one of which is provided for each of the dials 2, and is adapted to engage with the pinion thereof, for operating the respec 'tive dial. Each of these gear segments is arranged in rear of its companion gear P111- ion, and is provided at its lower end with a rearwardly projecting-arm 6, which is pivoted loosely on a transverse supporting rod 7 This rod is mounted with its ends on the upper ends of two rock arms 8, which turn loosely withtheir lower ends on a transverse The rock-arms 8, are connected by a transverse bar .10, which compels the two arms to move back and forth together. In the normal position of the gear segments, when the machine is at rest, these segments are retracted rearwardly out ofengagement with the dial pinions of the dials and the segments are elevated so that their lowermost teeth are opposite the spaces between the adjacent teeth of the dial pinions,

these spaces being in line with the pivots of the pinions and the gear segments.

The gear segments are yieldingly held .backwardly out of engagement with the dial pinions by means of springs 11 connecting 40 the rock-arms 8 with a stationary part of the frame. Fig. 11 shows one of the springs 11 connectmgoneof the rock-arms 8 with a transverse stationary bar' 12 in the rear part of the machine. The gear segments are moved forwardly so that their teeth engage with the dial pinions 4 by means of a shifting rock-arm 13, which is preferably secured to the right hand rock-arm 8 and projects Upon raising the shifting wardly and the rear segments 5 are engaged with the dial pinions, while upon swinging the shifting rock-arms downwardly, the rock-arms 8 are swung rearwardly and the I gear segments are disengaged from the dial pinions.

14, represents a cam whereby the gear segments are engaged with the dial pinions. This cam is mounted on the upper portion of a vertically swinging rocking-frame 15,

which is arrariged on the right hand side of the machine. This cam is provided at its frontend'with an incline or cam face 16 and at rear end with a concentric face 17.

When the cam is in its rearmost or retracted position, its incline stands in rear of a roller or projection 18, on the rear end and of the shifting arm 13, as shown in Figs. 2', 7 ,and

12. Upon swinging the rocking frame 15,

, so that the cam moves forwardly, the incline of the latter engages underneath the roller 18 and raises the arm 13, thereby moving the continued forward movement of the cam,

and the latter does not shift the gear segments any farther forward.

'When the rear end of the: concentric face 17 of the cam passes forwardly from underneath the roller 18, the constant pull of the springs 11 causes the rock-arm 13 to be depressed, and the rock-arms 8 to be moved rearward, thereby disengaging the gear segments from the dial pinions. Upon now movin the cam 14 backwardly together with the roc ing frame 15, this cam does not afiect the arm 13 and the parts connected therewith, but is affected by said arm at the last portion of the backward movement of the cam, at which time the back or lower side of incline 16 engages with the roller 18 which lifts said incline, and at the end of the backward movement of the cam, the latter clears said roller and drops behind the same, as shown in Fig. 2, preparatory to again raising the roller 18 and connecting parts during. the next forward movement of the cam 14.

"F or the purpose of permitting the front end of the cam to rise so as to clear the roller 18, this cam is pivoted at its rear end to the rear portion of the rocking framel5. The upward and downward movement of the front end of the cam is limited by means of a lug-19 projecting from the side of the cam and enga ing with a slot in the adjacent part of the roc ing-frame 15, as shown in Fig. 12.

The rocking frame 15 is secured with its lower portion to a transverse rock-shaft 20 journaled in the main frame and provided outside of the frame with a hand crank 21, as shown in Fig. 12, whereby this shaft is rocked and the parts connected therewith are operated.

The gear segments 5, are raised to their highest position by means of a return or lifting-bar 22, which extends transversely underneath all of the arms 6 of the gear segments and which is connected loosely at its rear ends with the transverse rod 7 by lifting plates 23. v v

24: represents two shifting arms which are mounted loosely at their rear ends on the rock-shaft 20, and which support at their other ends a transverse bar 25, which transverse bar is connected at its ends, by two 7 held in contact with links 26, with the lifting plates 23, whereby upon raising the shifting arms 24, the lifting bar 22 is caused to raise the gear segments and the other parts connected therewith resting on said bar. Upon depressing the transverse bar 25, the lifting-bar 22 is moved downwardly, and the gear segments resting thei eon are permitted to move downwardly with the bar until the segments are arrested.

Each of the gear segments is yieldingly the lifting-bar 22 by a spring 27 which connects the arm of the segment with the transverse bar 25. If the downward movement of the gear segment is arrested while the shifting arms 24 continue to move downwardly, the lifting bar 2-2 ismoved away from the underside of the arm of the gear segment, and the spring 27 is strained. The transverse bar is arranged at one end in a segmental notch 28, forme Fig. 2,

the front part of the rocking-frame 15, shown in Figs. 2, 7, and 12, andits opposite end is arran ed in a similar segmental notch 28, formed 1n a rocking-frame 29 which is secured to the operating shaft 20 on the lefthand side of the machine. The rocking frames 15 and 29 together with the operating shaft 20 constitute the main or universal operating frame of the machine.

When the machine is at rest, as shown in the transverse bar 25 engages with the front side of the notches 28 in the rocking frames 15 and 29. Upon turning the rocking shaft 20 forwardly by means of its handle 21, in the direction of the arrow, Fig. 2, the rocking frames are moved forwardly during the first part of the movement independent of the transverse bar 25. The latment with the dial pinions,

extent of their notches vter remains at rest until the inclined front end 16 of the cam 14 has raised the arm 13 and moved the gear segments into enga eduring which frames move idly the 28 along the ends of the bar 25 Without disturbing the latter.

movement the rocking I After the gear segments"; have been engaged with the dial plnions, the continued forward movement of the rocking frames causes the rear ends of their notches 28 to engage with the bar 25 and depress the same, thereby causing the lifting-bar 22 to be moved downwardlyand strain the springs '27.. This causes all of the gear segments which are free, to be moved downwardly and to continue their downward movement until'they are arrested. During the downward movement of the gear segments, while they are in engagement with the'dial pinions, and the dials connected therewith, are turned until the downward movement ofthe segments is arres The extent to which each dial is turned depends upon the position in which the downward movement of its operating segment is arrested. After the segment of these arms.

the latter ments have been arrested in their down:

ward movement, they remain in this position:

while the rocking frames complete their for-' ward movement. At the end of the forward movement of the rocking frames, the roller 18 of the rock arm 13 drops off from the rear front ends of the notches engage with bar 25. When the latter is so engaged it is moved backwardly with the rocking-frames to the end of their rearward movement which causes the transverse bar 25 to lift the lifting bar 22 and the gear segments which have been depressed, into their highest or normal position. During this upward movement of the depressed gear segments they are out of engagement with the dial pinions, whereby the dials are not turned backwardly with the segments, but remain in their shifted position. i

3.0 represents a number of elbow-shaped controlling arms, which form part of the devices whereby the downward movement of the registering gear segments is controlled.

One of these arms is arranged along the lefthand side of each gear segment and consists of an upright front part and a horizontal lower part which extends rearwardly' from the lower end of the upright part, thereby leaving a clear space in rear of the upright part of the controlling lever, as represented in Figs. 1, 2, 6, and 7 The rear end of the lower part of each controlling arm is mounted loosely on a transverse supporting bar 31, while the upper end of its front or upright-part is loosely connected with the upper portion of its companion gear segment. This .loose connection permits the controlling arm and the gear segment to swing freely about their individual axes, which are arranged parallel but out of line, and also permits the ear segment to move forward and backwar into and out of engagement with its companion dial pinion. In the uppermost position of the-controlling arms the same bear with their upper ends against a transverse stop bar 32, as, shown in Fig. 2, which limits the upward move- Each controlling arm is provided on the rear part of its upper end with a locking lug 33, and on the front part of its upper end with a stop lug 34, both of which lugs project toward the left and are preferably stamped out of one piece with the controlling arm.

The operation of the registering devices is controlled by a number of elbow-shaped key levers which are arranged side by side, and pivoted to a transverse supporting rod 35.

' and rocking frames move Each key leVer is provided with a lower actuating arm 36 which projects forwardly an upper stop arm 37 which projects upwardly along the left-hand side of one of the controlling arms and gear segments, as represented in Fig. 2. Each of these keylevers is provided on the rear side of its stop arm with a locking shoulder '38 which is adapted to engage with the locking lug 3; of the controlling'arm when the latter is elevated into its highest position and the keylever is in its fully retracted position, as shown in Fig. 2. When the parts are in this position, the key-lever holds the controlling arm against downward movement and the latter holds the gear segment against downward movement. If the gear segment, while so held against downward movement is moved forward into engagement with the adjacent dial pinion, and the rocking frames are turned forwardly for depressing the gear segment, the spring 27 of this segment will be strained, without, however, shifting the segment. At the end of this forward movement of the rocking segments, the roller 18 of the rock arm 13 drops off from the rear end of the cam 14:, the gear segment is moved rearwardly out of engagement from the dial pinion, and then the backwardly without having shifted the dial.

The upper arm of each key lever is provided on its front side with a vertical series of difl'erential stop shoulders 39, which are arranged step fashion and extend from the upper end of this arm downwardly and forwardly thereon, or, in other words, the shoulders are arranged radially out of line with one another, and different distances from the pivot of the key lever. These stop shoulders of the key lever are adapted to be moved forwardly into the path of the stop lug 34 on the controlling arm. The stop shoulders are arranged different distances from the stop lug 34 of the controlling arm, so that by moving different stop shoulders of the key lever into the path of the stop lug of the controller arm, the latter,'a'nd the gear segment connected therewith, may be arrested at different points in their downward movement. The uppermost stop shoulder of the key lever is most remote from the stop lug of the controlling arm and therefore requires the greatest forward movement of the key lever, in order to bring this stop shoulder into the path of this stop lug.

The stop shoulders of the key lever are so arranged that the distance from the stop shoulders to the path of the stop lug gradually grows less from'the uppermost stop shoulder to the lowermost stop shoulder.

The relative position of the different stop shoulders of the key lever is such that when its locking shoulder 38 remains in engagestop ment with the locking lug 33, and the gear segment is'sim )ly moved into and out of engagement wit remains at zero, previously moved.

if the same has not been But when the key lever has been moved forwardly, so as to disenits dial pinion, the latter ment with the adjacent dial gear pinion, 1 turns the same forward. By turning the key lever forward more or less and moving one or the other of its stop shoulders into the path of the stop lug 34 of the controlling arm, the distance which this arm descends can be varied, thereby varying the number of spaces which its gear segment turns the adjacent dial.

Main number ieey mechanism.

40 represents the main keys whereby the key levers of the main registering and recording mechanism are operated, and which are guided with their depending stems in the top 41 and bottom 42 of the key-board. As shown in the drawings, nine longitudinal columns of these keys are arranged transversely side by side. The first columnon the right hand side of the machine contains seven keys and represents fractions of oneeighth of a cent, the next column toward the left contains nine keys and represents cents, and the remaining columns of keys toward the left each contains nine keys and represents progressively higher orders of numbers according to the decimal system, so that the registering keys in the last or left-. hand column, represents hundreds of thousands of dollars.

The lowest numbers of the several columns of keys are arranged transversely in a row on the rear part of the key-board, and the corresponding higher numbers of the several columns are arranged likewise in transverse rows and progressively in their order toward the front end of the keyboard.

Each of the registering keys is yieldingly held in an elevated position by a spring 43 surrounding the stem of the key and connected at its upper end to the key and bearing with its lower end against the bottom of the key-board. The upward movement of each key is limited by a shoulder 4.4 formed on t e upper part of its stem and engaging with the underside of the top of the key-' board, as represented in Figs. 4, 9, l4 and 16.

The downward movement of all of the keys is-substantially the same, but the arrangement of each. column of keys lengthwise of the lower actuating arm of each key lever causes the keys. to bear against the lever at different distances from its pivot so that by depressing different keys the same distance, the key lever will be turned different distances. The keys having the lowest numbers bear against their respective key levers nearest the pivot and consequently the levers are thereby thrown the greatest distance, and the uppermost stop shoulders are shifted into the path of the stop lugr34 he of the respective controlling arms.

throw of each key lever upon depressing any one of its keys is so adjusted, that the proper stop shoulder on its upper arm is moved into the path of the stop lug 34 of the controlling arm and the downward movement of the respective gear segment is arrested after having turned the adjacent dial gear pinion a number of spaces corresponding to the number of the key which is depressed.

Loose eonneetion'for segments. v

The loose connection between each controlling arm and its gear segment heretofore referred to, is shown in its simplest form in the connection between the controlling arm and the gear segment,'which are As shown in Figs. 1, and

6, the loose connection between the controlling arm and the gear segment of the lowest registering device consists of upper and lower guide lugs 45 and 46 arranged on theupper end of the segment and bearing against the upper and lower guide faces 47 and 48, which are formed on the upper end of its companion controlling arm. As the controlling arm and segment rise and fall, the guide lugs of the segment slide back and forth on the guide faces of the arm. The guide faces are so constructed that the back and forth movement of'the segment on the arm is radially with reference to the dial pinionin all positions of the segment. By so forming the guide faces of the arm, the gear segment can be engaged with and disengaged from the dial pinion in all positions of the segment without disturbing the position of the dial pinion. The construction of the loose connections between the controlling arms and gear segments of all of the higher registering devices above the fractional registeringdevice are combined with carrying devices, whereby each registering dial, upon making one complete turn, causes the next higher .dial to be turned forward one "space,

. mechanism of the higher registering devices are cons ructed. as follo s:

As shown in Figs. 1, 2, and 6, each controlling arm is provided at its upper end with, upper and lower guide faces 47 and 48 and its lower guide face is engaged by a lower guide lug 46 on the adjacent gear segment, the same .as in the coupling between the controlling arm and segment of the initial registering device. The gear segments of the higher registering devices are each rovided with an upper guide lug 49, whic is adapted at times to bear against the upper guide face 47 of the companion controlling arm in substantially the same manner in which the upper guide lug 45 of the fractional gear segment'bears against its com panion arm, the only difference being that the upper guide lug 49 of the higher gear segments are held out of engagement and separated by a space from the upper guide face of the companion arm whenno'number is carried from a lower to a higher registering device. The upper guide In 49 is held in this elevated position above t e adjacent guide face by a rocking latch 50 which is arranged in a notch in the rear side of the gear 'segment and which normally pro ectstoward the left/and engages with the upper guide face 47 of vthe adjacent controlling arm, as shown-in Fig. 2.

During the ordinary up and down movement of each higher controlling arm and gear segment, the latter is guided by its lower guide lug 46 and the locking latch 50 engagmg with the lower and upper faces of the adjacent arm, this movement being the same as the movement of the controlling arm and gear segment of the fractional registeringdevice. Normally the downward move ment of the controlling arm is determined by the position of its companion key lever and this arm in turn controls the extent of the downward movement of the gear segment. When, however, the locking finger 50 is withdrawn out of engagement from the upper guide. face 47 of' the arm, the'companion gear segment is capable of moving downward independent of the arm until the upper guide lug 49 engages with the upper guide face of the arm. The extent of this independent movement of the gear segment with reference to its companion arm is equal to one tooth or space of the segment,so that by. this means the gear segment is enabled to turn the dial pinion one space more than the position of the key lever permits the same .to

move.

The withdrawal of the locking latch of each higher registering device is controlled by the next lower registering device and the withdrawal of each latch is effected when the next lower registering device has'made one complete turn and arrived at zero. Each of the locking latches is pivoted on the right hand side of its adjacent gear segment, so

---e ,to tu n tr n er ely with refer t the with the face of this cam,

latter. The latch is turned toward the left into its operative position by a spring 51, the movement in this direction being limited by a shoulder 52 arranged on the latch and bearing against the right hand side of the gear segment. 53 is an upright trip plate connected with the lower end of each latch, and arranged normally at right angles, or nearly so, to the adjacent gear segment, when the latch is in its operating position. 54: represents a number of upright trip arms, each of which is controlled by a lower registering device, and which turns the locking latch of the next higher registering device into an inoperative position. This arm is mounted loosely with its lower end on the supporting bar 35 and is provided at its upper end with a rearwardly and forwardly projecting hook 55, and in front and below said hook with a bend forming a bearing finger 56, 57 represents trip cams arranged on the left hand side of each registering dial pinion and connected with the adjacent pinion and dial, but separated from the pinion by an intervening space or groove. The face of each of these cams may begin at its lowermost point near the axis thereof and then extend outwardly in a spiral line terminating with its highest point-in line with its lowermost point with which it connects abruptly. The trip cam of the fractional registering device has its face divided into eight parts, each part of which, except the first, is arranged one-eighth of a space far-. ther from the center of the cam than the preceding part, while the trip cams of the higher registering devices each has its face divided into ten parts, each part, except the first, being arranged one-tenth of a space farther from the axis of the cam than the preceding part. Each of the trip arms 54 extends upwardly along the right-hand side of the trip cam of a lower registering device and its shoulder 56 engages while the hook 55 at its upper end extends toward the left and is adapted to engage with the trip plate 53 of the next higher registering mechanism. In the initial position of each trip arm, its shoulder 56 engages with the lowest part of its trip cam, as represented in Figs. 2 and 7. As the trip cam is turned in the direction of the arrow, Fig. 2, at the same time that its dial and gear pinion are moved forwardly by the adjacent gear segment during the adding operation, the trip arm is moved back wardly by the gradually rising face of the trip cam. During this backward movement of the trip arm, its 'hookengageswith the trip plate 3 of the next higher registering device and is deflected toward the right thereby, the hook being sufiiciently elastic for this purpose. After the hook has passed in rear of said trip plate, the hook, owing to its resilience, springs back to its normal pothe trip arm has been shifted to its rearmost position. Upon now turning this cam forwardly another space together with its companion dial and pinion, the highest part of the cam is carried from underneath the shoulder of the trip arm and the latter is moved forwardly over the abrupt face of the cam until its shoulder 56 again engages with the lowest part of the cam face. During this movement of the trip arm, its hook strikes the rear side of the trip plate 53 of the next higher registering mechanism and turns the same forwardly, thereby disengaging the locking latch from the adjacent con trolling arm and permitting the gear segment carrying the trip plate to move forward one space. The forward movement of the trip arm is effected when the dial with which its trip cam is connected has made one complete rotation and again stands at .zero, whereby the addition represented .by

this complete rotation is carried to the next higher registering device. movement of the trip arm is effected quickly by a spring 58, which connects with a stationary cross bar 59 arranged in front of the trip arms. The trip arms 53 of each registering device is so arranged and is of such length that the hook of the next lower trip arm can engage with the rear side of the plate, for disengaging its latch in any position of the gear segment carrying the plate, and in order to accomplish this engagement it is obvious that cams 57 should be constructed so as to give arms 56 the proper throw. If-a gear segment is locked in its highest position by reason of none of its companion keys having been depressed, the withdrawal of its latch from the controlling arm simply permits the gear segment to drop one space and turn its companion dial pinion forward one space, while in engagement therewith, the movement of this dial representing one number carried up from the next lower dial. If any one of the keys of the key levers has been depressed, so as .to release the gear segment and permit the same to move downwardly for effecting an addition, and if during this time the next lower registering device has made a complete turn, so as to require the carrying up of a number from the next lower registering mechanism, the latch of the higher registering device will be withdrawn, while the same is effecting its addition, thereby causing the segment to descend and turn its dial one space in addition to the spaces correiiponding to the depression of its respective ey. v

hen the locking latch has been withdrawn so as to permit a gear segment to The forward position during the subsequent upward movement of the arm and the segment until the upward movement of the arm is arrested by striking the stop bar 32, and the gear segment continues its upward movement 1ndependent of the arm the extent of one space. The gear segment has now reached its highest position' and its latch is again swung automaticallyby its spring over the controlling arm. The controlling arm and gear segment now remain in this relative position until another number is to be carried up from the next lower registering device.

When the controlling arm has been retracted to its highest position, the adjacent key lever is moved into its normal retracted position, so that its locking shoulder 38 engages with 'the locking lug 33 of the controlling arm and locks the latter against downward movement. The. return movement of each key lever is preferably effected by a spring 60 which connects the upper arm of the key lever with the transverse shaft 9, as shown in Fig. 2, or with some other convenientpart ofthe mach The lower guide lug of the gear segment is not absolutely necessary because the weight of the parts connected with the controlling arm and arranged in rear of its pivot is sufiicient to raise the arm, but it is preferableto employ this lower guide lug 416 on the gear segment because it compels the arm to rise with the gear segment and avoids displacement of these parts with reference to.

each other, and also serves as a stop to limit the upward movement of the gear segto the next-higher registering device whichment.

The gear pinion and the cooperating gear segment of the fractional registering device are so constructed that the fractional dial makes one rotation whenever it is moved forward eight spaces. After the fractional dial has made one rotation the whole number represented by this rotation is transferred by the first carrying device from the registering mechanism of the fractional dials represents cents. The complete turns of each of the following registering devices are in like manner carried or transferred to the next higher dial by the respective carrying device. The dial which records the highest number, in this instance the millions of dollars, is preferably operated only by' the adjacent carrying device of the next lower dial and is incapable of being operated directly from the key-board because it is not provided with a key operating mechanism.

The mechanism whereby the dials are all turned back to zero or theplace of beginning, after the addition of numbers has been completed is constructed as follows:

61 represents a series of feeling rock levers the proper distance for resetting or restoring the main registering dials to zero. One of these shifting levers is mounted loosely on the supporting bar 35 adjacentto the left-hand side of each of the key levers and is provided on its upper arm with a forwardly projecting feeling finger 62 and with a shifting finger 63 which extends behind the upper arm of the adjacent keyv lever. The feeling levers have their fingers arranged in rear of the total cams 57 and each of these levers is turned so that its upper arm moves backwardly by the upper arm of the adjacent key lever engaging with the shifting finger 63 of the feeling lever. 64 represents a transverse pull bar arranged in rear of the lower arms of the feeling levers and connected witheach of the latter by a pull spring 65, as represented in Figs. 2 and 12. This pull bar is connected at its ends to the lower ends of two depending pull or rock arms 66, which are secured at their Fig. 12. Upon turning this rock-shaft, so as to swing its depending pull arms backwardly, the feeling levers are turned by means of the springs 65 so as to movethe upper arms of these levers forwardly. This movement of the rock-shaft 9 is effected by a cam 67, which is mounted on the left-hand side of the rocking frame 29 and whichis constructed substantially the same as the cam 1 1 which is mounted on the rocking frame 15. As shown in Figs. 11 and 13, this cam is pivoted at its reaflend by a transverse pin to the rear portion ofthe rocking frame 29 and is provided at itsfront end with an incline or cam face 68 and in rear of the inclin with a concentric face 69.

The cam 67 is pivotally supported on the rocking frame 29 in the same manner in which the like cam 14 is pivoted on its cor- \rock shaft 9 and provided at its rear end with a roller or projection 73 which is adapted to be engaged by the cam 67 for turning the rock shaft 9.. When numbers are being added with the machine, thecam 14'is depressed, as \shown in full lines, Fig.

2, so as to be in a osition when moved for- .wardly by the roc ing frame 15 to engage the roller on the arm. 13, for moving the gear segments into engagement with the dial pinions, and during this time the cam 67 is lifted into the position shown in full lines, Fig. 11, so that when the rocking frame 29 is moved forwardly, the cam 67 will clear the roller 73 of the rock-arm 72 and not disturb the rock-shaft 9 and the parts connected therewith.

If it is desired to restore all of the total dials 2 to zero, the cam 14 is raised into its inoperative position, shown by dotted lines 14 in Fig. 2, and the cam 67 is lowered into its operative position, as shown by dotted lines 67 in Fig. 11. Upon now turning the rock-shaft 20 by hand so as to move both rocking frames 15 and 29 forwardly, the cam 14 passes over the roller 18 of the arm 13 without disturbingthe same, but the inclined front of the cam 67 engages with the roller 7 3 on the rear end of the rock-arm 72 and raises thesame until this roller engages with the concentric part 69 of this cam. By this movement'of the arm 72, the rock-shaft 9 is turned in the direction for moving its depending arms 66 rearwardly and pulling the springs 65 rearwardly. This pull on the springs 65 causes the feeling levers to be turned until the feeling fingers of their upper arms engagewiththe spiral surfaces of the trip cams. After the feeling fingers bear against these cams, their movement is arrested and the continued backward movei ment of the pull bar 64 simply stretches .the

springs.65 until the bar reaches the end of its backward movement. The feeling finger of each feeling lever engages with that part of the surface of the adjacent trip cam which I is directly opposite the feeling finger, and

as these trip cams are turned with the adj acent 7 dial they present difierent parts of their spiral surfaces to the opposing feeling fingers, which causes the forward movement of the upper arms of the feeling levers to be arrested in different positions when swung forwardly. During the forward movement of the upper arm of each feeling lever, its shifting finger 63 engages with the rear side of the upwardly projecting arm of e the adjacent key lever and moves this arm forwardly. The construction of the parts is such that the spiral surfaces of the trip cam bear a definite relation to the stepshaped series of stop shoulders on the upper arm of the key lever; When the feelingfinger 'of the feeling lever, upon being moved forwardly, bears against the lowest key-lever-stop-controlling part of the adja-.

cent trip cam, the adjacent key lever is carof the stop lug of the controlling arm. The succeeding parts of the spiral surface of the trip cam are so constructed. that they rise 5 progressively higher and arrest the forward movement of the feeling lever when the same has carried the adjacent key lever with its corresponding stop shoulder into the path of the stop lug of the controlling arm. This forward movement of the feeling lever and that of the upper arm of the key lever is gradually reduced as the progressively higher parts of the trip cam are presented to the feeling finger, and when the highest part of the trip cam is presented to the feeling finger, the feeling lever is prevented from moving forward at all and the upper arm of the key lever is not moved with its locking shoulder out of engagement with the locking stop of the controlling arm and consequently the companion gear segment connected therewith is held against down 'ward movement. After the rocking frames 15 and 29 have been turned forwardly sufiiciently to engage the several feeling fingers of the feeling levers with their respective trip cams, the rear ends of the segmental notches 28 in the rocking frames engage with the cross bar 25 and depress the same, thereby moving the lifting-bar 22 downwardly, and at the same time pulling down the springs 27. This downward pull on these springs causes each spring to pull its respective gear segment down as far as possible, and after the downward movement of the segment has been arrested the continued downward movement of the cross-bar 22 together with the rocking frames simply stretches these springs until this bar reaches the end of its downward movement If a gear segment is locked in its uppermost or zero position its spring 27 will be stretched its fullest eXtent, whereas, if a gear segment moves downwardly more or less before it is arrested by its shifted key lever, its spring 27 will be stretched less in proportion. This downward movement of the gear segments which are free to move in. this direction takes place while the gear segments are in their retracted position and out of engagement from the dial pinions, so that the dials are not affected by this movement of the segments.

. After the rocking frames have reached the end of their forward movement and the roller 73 has dropped off from the rear end of the concentric portion 69 of the cam 67,

the gear segments are moved forwardly by hand-operated mechanism into engagement with their respective dial 'pinions and are held in-this position during the entire subsequent backward movement of the rocking frames, which is effected by hand-operated mechanism. During the backward move ment of the rocking frames, the gear segments are raised to 'their highest positions, while in engagement with the dial pinions by the rod 22 and connecting parts and turn the dials backwardly'. At the end of the upward movement of the gear segments the ments which are held or locked in their highest positions, by reason of their dials being at zero, are simply moved forward at the end of the forward movement of the.

rocking frames, so as to engage with their respective dial pmlons and are again moved backwardly out of engagement therefromat the end of the forward movement of the rocking frames, without disturbing their respective dials. Each of the unlocked gear segments is moved downwardly a number of spaces corresponding to the number which is registered on its dial, the extent of this movement being controlled by the companion trip cam which arrests the forward movement of the key lever, through the medium of its feelinglever, when the proper stop shoulder of the key lever has been presented to the controlling arm.

Upon now moving the gear segments forwardly in their variously depressed positions' and then raising them to their highest position, each depressed gear segment will turn its dial backward the same number of spaces that the gear segment was depressed. Inasmuch as each gear segment was permitted to descend by its trip cam, feeling lever and key lever, the same number of spaces as the number indicated on its dial, the gear segment subsequently moves upwardly the same number of spaces before reaching its highest position, thereby turning its dial backwardly the same number of spaces and restoring the same to zero.

When all of the dials have been returned to zero, the shoulders 56 of all the trip arms engage with the lowest parts of all the trip cams 57. I r

The cams 14 and 67 are provided with a longitudinal slit 74, so as to facilitate the manufacture of these parts.

The mechanism whereby the positions of the cams 14 and 67 are reversed preparatory to restoring the dials to Zero is constructed as follows:

The cams 14 and 67 drop into their operative position by gravity. Each of these cams is provided in rear of its pivot with a tail 75 which is depressed when it is desired to lift the respective cam into its inoperative position. 76, is a shifting lever which is pivoted at its lower end and is normally turned so that its upper end is disengaged from the rear side of the tail on the cam 14 by a spring 77, as shown in Fig. 2. The member 76 projects in rear of-the main frame so as to be accessible for manual operation.

Each of the dials is held againstturning while its companion sub-total dial is being companion gear pinion, as shown in Figs. 2,

7, 9, and 18. The pawls 103 of the several gear pinions are mounted on a. transverse pawl bar 104, which is supported at its ends by means of two pawl arms 105, which turn loosely upon the supporting rod or bar 35 of the key levers. The pawl arms are moved rearwardly for engaging the pawls of the bar 104 with the gear pinions by means of springs 106. These springs are connected loosely at their rear ends to the rock-shaft 9 and at their front ends to the pawl arms 105. During the forward movement of the gear segments preparatory to turning the dial pinions, the detent pawls are swung forwardly out of engagement with the dial pinions by means of two shifting rods 107 which are connected at their rear ends to opposite ends of the transverse rod 7 or some part moving therewith, and each of which is provided at its front end with a fork or bifurcation 108, which engages with a pin or shoulder 109 on the pawl arm arranged on the adjacent-side of the machine. As the gear segments move forward into engagement with the gear pinion the shifting rods 107 move the detent pawls 103 out of engagement with the dial pinions and when the gear segments move backwardly the detent pawls are again engaged with the dial pinions by the springs 106.

Recording meclwmz'sm.

For the purpose of recording the num bers which are added together by the above described mechanism, a recording mechanism is provided, which is constructed as follows: y

140 represents a printing roller or platen which is arranged transversely in the upper, rear part of the machine and under the lower side of which the sheet or other article is placed which receives the record. 141 represents a number of type segments which are arranged transversely side by side below the platen and which are pivoted at their front ends to the supporting bar 31 upon which the rear ends of the controlling arms 30 are pivoted. Each of these type segments is provided at its rear end with a segmental row of type-carriers 142, which are capable of moving radially back and forth on the type segment.

Each of the typecarriers is provided at S-shaped spring 1 15, which is arranged between the carrier and the type segment and is secured with one end to the carrier andt rier is again quickly retracted to its innermost position by means of its spring.

Each of the type segments is connected with one of the controllingarms, so that upon depressing a controlling arm and the registering gear segment connected therewith, the companion type segment W111 be raised and present one of its type to the printing point.

For convenience in operating the machine, the keys are separated a considerable distance on the key-board and in order to produce a compact record, the printing segments are arranged closer together than the keys and the registering mechanism. In order to permit of this arrangement, each type segment and its controlling arm are connected by a connecting arm 146, as represented in Figs. 1 and 2. The connecting arms of the central controlling arms and type segments are comparatively straight, but the connecting arms of the outer type segments and controlling arms are arranged obliquely, the degree of this obliquity gradually increasing from the central type segments and controlling arms in opposite directions toward the outer type segments and controlling arms, as represented in Fig. 1. The connecting arms 146 of the outer controlling arms are arranged in the spaces behind the upright parts and above the horizontal parts of the controlling arms, thereby permitting the inner controlling arms to move up and down without interfering with the connecting arms 1416 of the outer controlling arms.

The types on each. type segment are; arranged to correspond with the teeth and numbers of its companion gear segment and registering dial, the zero type being at the upper end of the series and the .progressively higher digits arranged in their order downwardly'from the zero type. When the registering gear segment is in its highest position it presents its zero tooth to the dial pinion, and the type segment, which at this time is in its lowest position, resents its zero type to the printing point. Upon depressing a gear segment so as to present one of its higher teeth to the dial pinion, its companion type segment is raised proportionally and presents a corresponding higher numbered type to the printing point.

147 represents a number of hammers whereby the type-carriers are struck for driving the type against the platen. One of these hammers is arranged adjacent to each type segment and is provided with a head which is arranged in front of the series of types and in line with the printing point of the platen. Upon shifting the type segment so as to bring one or another of its type carriers to the printing line and then operating the hammer, the latter delivers a blow against the inner end of the particular carrier which is at the printing point and produces an impression of its type on the platen. The several hammers are pivoted on the transverse rod 12, arranged in rear of the segments; and each of the hammers is yieldingly held in its forward position by a spring 148 connected at its lower end to a cross-bar 149 and at its upper end to a dc pending arm 150 on the hammer.

151 represents a vertically movable trip bar or rod which is arranged transversely below the hammers and whereby the hammers are operated. This bar is supported at its ends upon the rear ends of rock arms 152 which turn loosely with their front ends on the rod 31 supporting the type segments and controlling arms.

153 represents a number of hammer or trip pawls, whereby the hammers are retracted preparatory to delivering a blow against the type carriers which areat the printing point. One of these pawls is arranged adjacent to each hammer and pivoted loosely at its lower end to the trip bar 151, and its upper end is provided on its rear side with a downwardly facing hook or shoulder 151, and above this shoulder with a trip face 155. Each of the hammers is provided in front of its pivot adjacent to the upper end of the hammer pawl with a lower trip lug or shoulder 156 and an upper triplug or shoulder 157. When the parts are at rest, the hammer pawl 153 is raised into its highest position and the ham Iner is in its normal position with its lower trip lug 156 below and in rear of the hook of the hammer pawl and with its upper shoulder 157 in rear of the trip face of the hammer pawl, as represented in Fig. 2.

Upon shifting the hammer pawl rearwardly, while the parts are in this position, so that its hook overhangs the lower shoul- -der 156 of the hammer, and then pulling the hammer pawl downwardly, the hook of g the hammer pawl engages with the lower shoulder of the hammer and turns the same so that its head is retracted from the type carrier at the printing line. As the hammer moves downwardly with the hammer pawl, the upper shoulder of the hammer comes into engagement with the trip face ofaatlie hammer pawl and during the continued downward movement of the hammer and its pawl, this upper shoulder gradually crowds the hammer pawl forwardly with reference to the hammer by reason of the hammer and its pawl swinging on different centers. During the last portion of the downward movement of the trip bar 151 and the hammer pawl mounted thereon, the pawl is crowded forwardly by the upper shoulder 157 of the hammer to 'such an extent that its hook is disengaged from the lower shoulder 156 of-the hammer, thereby liberating the latter and permitting its spring 148 to throw the same quickly and deliver a blow against the type carrier at the printing line. The trip bar 151 now rises and carries the hammer pawl into its highest position, preparatory to again engaging the hammer for depressing the same.

158 represents a number of upright shifting arms whereby the hammer pawls are moved rearwardly, so that their hooks engage with the lower shoulders of the hammers. One of these arms is arranged ad- "jacent to each hammer pawl, and is pivoted at its lower end on the trip bar 151, and its upper end is provided with a roller or projection 159 which bears against a hammer cam 160 on the lower part of the adjacent type segment. This hammer cam is provided at its upper end with a receding or low portion, an inclined portion arranged below the low portion, and a concentric or high portion arranged below the inclined portion. Each shifting arm 158 is moved forwardly and its roller is yieldingly held in engagement with the adjacent hammer cam by a spring 161 connecting said arm with a cross bar 162 secured to the rock arms 152. The backward movements of each hammer pawl with reference to its companion shifting arm, is limited by means of a stop 163 secured to the upper portion of the hammer pawl and engaging with the front side of the shifting arm.

Each hammer pawl is yieldingly held in its rearmost position with reference to its shifting arm by means of a C-shaped spring 161 secured with its ends, respectively, to the hammer pawl and its shifting arm, as shown in Fig. 2.

In the lowermost position of a type segment, the receding part of its cam is presented to the roller of the shifting arm 158, which permits the hammer pawl to be retracted into its foremost position, as represented in Fig. 2. Upon depressing the trip bar 151 when the parts are in this position, the roller 159 is not engaged soon enough by the incline of the cam 160 to engage the hook of the hammer pawl with the lower shoulder of" the hammer, before the hook has passed below this shoulder;

but instead, the trip face of the hammer printing line is produced. If the type seg-' ment is raised, so as to present one of its lower types to the printing point or line, the incline of its cam, duringthe first part of the upward movement of the segment, moves the shifting arm 158 rearwardly together with the hammer pawl yieldingly connected therewith, so that the hook of the hammer pawl stands over the lower shoulder 156 of the hammer. Upon now depressing the pawl 153 the hammer will be retracted and released near'the end of the downward movement of the pawl, and will be quickly swung up' by the spring 148, thereby delivering a blow against the type at the printing point and producing an impressionthereof.

The incline 160 of the type segment cam is so constructed that it throws the hammen' pawl backwardly into an operative position when the segment is raised one digit space, and during the continued up.- ward movement of the segment, the ham 'mer pawl is held in this operative position by the high concentric part of the segment cam. By thus constructing the type segment cam its companion hammer pawl is not shifted when the segment isnot raised and its zero type remains at the printing line,

but the hammer pawl is shifted into an op- 165 represents a number of transfer or coupling fingers which enable the ciphers in a number to be printed automatically. One of these transfer fingers is secured to each of the shifting arms 158, and extends laterally toward the right therefrom into engagement with the shifting arm of the next lower hammer pawl, as represented in Fig. 13., If any one of the printing segments remains in its lowest position, so that its cipher remains-at the printing line and the next higher printing segment has been raised for printing a. higher number or digit, the transfer finger of the higher hammer shifting arm 158 while being moved rear- Wardly by the cam of its companion printing segment, is caused to engage with tlie shifting arm 158 of the next lower hammer pawl and shift the latter backwardly, so that its hook is carried backwardly over the lower shoulder of the companion hammer. Upon now depressing the trip bar 151, the higher hammer pawl 153 is coupled with its hammer, and the next lower hammer pawl is also coupled with its hammer, whereby an impression of the cipher or zero type on the lower segment is produced on the platen at the same time that the next higher number is printed on the platen.

If two ciphers 'occur in succession in the body of a number, the shifting arm to the left of the highest order printing segment to be operated for printing a zero sets the hammer mechanism of said highest zeroprinting segment by means of the transfer fingerof said shifting arm and the shifting arm of said highest zero-printing segment in turn, by means of its transfer finger, sets the hammer mechanism of the printing segment of next lower order, etc.

This operation of producing an impression of the cipher type is effected automatically and renders it possible to print any number of ciphers in succession in the body of a number because the hammer operating mechanism of each segment which remains standing with its upper type at'the printing line is controlled by the hammer operating mechanism of a higher type segment and in turn controls the hammer operating mechanism of the next lower type segment, if the next lower segment presents a cipher to the printing line.

Only the ciphers below the highest digit in the number to be recorded are thus printed automatically because the printing of a digit depends upon the upward movement of a printing segment, thereby avoiding the printing of ciphers ahead of the highest digit in the number to be recorded. The hammer shifting device of the segment which prints the numbers representing units of cents is, preferably, not provided with a transfer finger to operate on the hammer shifting device of the segment which prints fractions of a cent, because it is proper that the space to the right-of the lowest integer shall remain blank when no fraction is recorded thereon.

The carrying bar 151 is raised by-one or more springs 166 which connect this bar with the transverse rod 12, and the upward movement of the bar 151 is arrested when the hammer operating pawls reach their highest position by a transverse bar 167 which is engaged by the rear ends of the rock arms 152.

168 represents a coupling hook, whereby the hammer trip devices are depressed. This hook is pivoted with its upper. end to the trip bar 151 and its lower engaging end is provided with a notch having upper and lower shoulders. I In the lowered position of this, l'lOOkItS notch engages with a cross-bar 169 which is connected with the rock arms 24, as represented in Fig. 2, so that the hook and the hammer operating devices connecting therewith are actuated from the rocking frames notch of the hook 168, as represented in Fig. 2.

Upon swinging the rocking frames forward, the incline of the cam 14: first raises:

the rock arm 13 and shifts the gear segments into engagement with the dial pinions, and after the segments have been so shifted, the rear shoulders of the notches 28 in the rocking frames engage with the crossbar 25, so that thereafter this bar is carried downwardly-with the rocking frames and the gear segments are depressed. During this downward movement of the bar 25 with the rocking frames, the companion bar 169 moves down idly in the notch of the hook 168 until this bar engages with the lower or front shoulder of this hook. After the cross bar 169 engages with the lower shoulder of the notch of the hook, the latter and the hammer-operating devices connected therewith are moved downwardly with the rocking frames until these frames reach the end of their downward movement. During the .last portion of the downward movement of the rocking frames the hammer pawls are disengaged, as before described, from the retracted hammers, whereby the latter are released and strike the type-carriers which are at the printing line. By this means, the blow of the hammers is delivered after the registering of the numbers has been effected on the dials and the type segments have been shifted into their proper position for recording the respective number.

The hammers do not follow the type-carriers to the end of their outward movement but are stopped short, after delivering a blow against the inner ends of the carriers by their depending arms 150 engaging with a rubber facing 170 on the cross-bar 167, so that the types are moved outwardly by the impact of the hammers and are then returned by their springs so as to clear the printing surface.

When it is desired to print or record the total at the foot of the column of the 'numbers which have been printed, the operation is as follows :'The total key 84 is first depressed, thereby raising the cam 14 into an inoperative position and lowering the cam 67 into an operative position. Upon now moving the rocking frames 15 and 29 forwardly the feeling levers 61 are turned so as to move their-feeling. fingers forwardly into engagement with the respective cams 57 and at the same time each feeling lever carries the adjacent key lever forwardly forward movement of the rocking I point which responding so that its particular stop shoulder 39 corto the position of the trip cam 57 and its dial is moved into the path of the stop lug 31 of the controlling arm. After the key levers have been thus shifted forwardly into their respective positions corre sponding with their dials, the continued frames causes the gear segments, while in a retracted position out of engagement with the dial pinions, to be depressed until each segment is arrested by the engagement of the stop lug on its controlling arm with the respective stop shoulder of its key lever, whereby each printing segment is raised so as to present the type carrier to the printing carries the type corresponding to the number registered on its companion dial. During the last-part of the forward and downward rocking movement of the rocking frames the hammers are operated and the particular type at the printing line are impressed on the platen.

Upon now swinging the rocking frames backwardly, the gear segments are raised while still in a retracted position out of engagement with their companion dial pinions, thereby permitting further numbers to be added to the total already registered on the dials. If, however, it is desired to turn the dials back to zero, of the added numbers has been printed or recorded, the gear segments, while in the retracted lower position which they occupy while printing the totals, are moved forwardly into engagement with their respective dial pinions by the depression of the key 87. Upon now moving the rocking frames backwardly, the gear segments are raised, while in their forward position in engagement with their pinions, whereby each of the latter is turned backwardly and when the segments reach the end of their upward movement, the dials have'been turned backwardly a number of spaces corresponding to the number on the dial. thereby turning all of the dials to zero.

Auxiliary adding mechanism.

An auxiliary adding mechanism is provided which permits of eifecting an addition of numbers different from the numbers which are added by the main adding mechanism.

This auxiliary adding mechanism is constructed as follows :2000 represents a number of auxiliary dials which are mounted on the left hand end of the dial shaft 3.

5000 represents a number of auxiliary gear segments which are mounted on the transverse rod 7 and are adapted to engage with gear pinions 400 on the auxiliary dials, as represented in Fig. 7. Each gear segment 5000 is connectedwvith a controlling after the totalma ry gear segment of arm,

cross-bar 22f l .the present application, the auxihary mecharm 3001 arranged adjacent to the gear segment by a latch or coupling which at times permits the segment to move independently of the controlling arm.

3601 and 3701 represent auxiliary key levers which are operated by auxiliary keys 101 and which control the operation of the auxiliary registering and recording mechanism. The detail construction'of the dials, gear segments, printing segments, key levers, and the parts cooperating therewith of the auxiliary registering and recording mechanism is substantially the same as the construction of the same parts in the main registering and recording mechanism, except as hereinafter distinguished, and the same letters of reference are therefore employed to denote like parts in'both of these sets of mechanisms.

In the drawings, two auxiliary key leversand three auxiliary dials are shown, which permit of registering and recording a total of 999, but additional registering and recording devices may be employed if it is desired to increase the capacity of the machine.

In the auxiliary mechanism each of the higher gear segments 5000 is providedwith a pivot latch 501 the same as in the main registering mechanism. The lowest or prithe auxiliary registering mechanism is provided with a movable latch 502 which is adapted to be engaged with or to be disengaged from the upper guide face on its companion controlling but for the purpose of the present application this latch might be dispensed with and the primary gear segment constructed the same as the primary gear segment of the main registering and recording device.

In the auxiliary registering mechanism the gear segments are not provided with lower stops 46 like those of the gear segments of the main registering mechanism which permits the auxiliary controlling arms to move downwardly when necessary independently of the auxiliary gear segments. The upward movement of the auxiliary gear segments is limited by stops 218 with which the upper ends of the gear segments engage. 219 represents a foot formed on the lower side of each controlling arm 3001 and adapted to engage with the lifting However, for the purpose of anism could be made exactly as the main number registering and recording mechanism is made.

For the purpose of addition of numbers effecting an ordinary" on the auxiliary registering mechanism, the auxiliary key levers are shifted into the proper position by the depression of the keys 101 representing the numbers to be added and then the rock- 

